New observations on green hydra symbiosis

• Authors: G. Kovacevic , M. Kalafatic , N. Ljubesic
• Languages of publication: EN

Abstracts

EN

New observations on green hydra symbiosis are described. Herbicide norflurazon was chosen as a ?trigger? for analysis of these observations. Green hydra (Hydra viridissima Pallas, 1766) is a typical example of endosymbiosis. In its gastrodermal myoeptihelial cells it contains individuals of Chlorella vulgaris Beij. (KESSLER & HUSS 1992). Ultrastructural changes were observed by means of TEM. The newly described morphological features of green hydra symbiosis included a widening of the perialgal space, missing symbiosomes and joining of the existing perialgal spaces. Also, on the basis of the newly described mechanisms, the recovery of green hydra after a period of intoxication was explained. The final result of the disturbed symbiosis between hydra and algae was the reassembly of the endosymbiosis in surviving individuals.

Keywords

EN

CHLORELLA; GREEN HYDRA; SYMBIOSIS; SYMBIOSOME

Discipline

• EXPERIMENTAL_BIOLOGY_&_MEDICINE: EXPERIMENTAL BIOLOGY & MEDICINE

• Publisher: Institute of Systematics and Evolution of Animals, Polish Academy of Sciences
• Journal: Folia Biologica
• Year: 2007
• Volume: 55
• Issue: 1-2
• Pages: 77-79

Contributors

author

G. Kovacevic

author

M. Kalafatic

author

N. Ljubesic

• Document Type: SHORT REPORT
• Publication order reference: Goran Kovacevic, Faculty of Science, University of Zagreb, Department of Zoology, Rooseveltov trg 6, HR-10000 Zagreb, Croatia